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US Patent: 410,484
Machine for Cutting Screw Blanks and Screws
Patentee: John P. Berkholz (exact or similar names) - Philadelphia, PA USPTO Classifications: 470/176, 470/69 Tool Categories: metalworking machines : cutting-off and centering machines metalworking machines : metal threading machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 26, 1889 Granted: Sep. 03, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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